DOI: 10.1016/j.epsl.2017.10.027
Scopus记录号: 2-s2.0-85040983021
论文题名: Oceanographic mechanisms and penguin population increases during the Little Ice Age in the southern Ross Sea, Antarctica
作者: Yang L. ; Sun L. ; Emslie S.D. ; Xie Z. ; Huang T. ; Gao Y. ; Yang W. ; Chu Z. ; Wang Y.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 481 起始页码: 136
结束页码: 142
语种: 英语
英文关键词: Adélie penguins
; katabatic winds
; Little Ice Age
; ocean upwelling
; polynya
; Ross Sea
Scopus关键词: Birds
; Climatology
; Ecology
; Ecosystems
; Glacial geology
; Ice
; Oceanography
; Saline water
; Sea ice
; Katabatic winds
; Little Ice Age
; ocean upwelling
; polynya
; Ross Sea
; Climate change
; bioindicator
; climate variation
; katabatic flow
; Little Ice Age
; paleoceanography
; paleoclimate
; paleoecology
; polynya
; population growth
; seabird
; upwelling
; Ross Sea
; Southern Ocean
; Spheniscidae
英文摘要: The Adélie penguin is a well-known indicator for climate and environmental changes. Exploring how large-scale climate variability affects penguin ecology in the past is essential for understanding the responses of Southern Ocean ecosystems to future global change. Using ornithogenic sediments at Cape Bird, Ross Island, Antarctica, we inferred relative population changes of Adélie penguins in the southern Ross Sea over the past 500 yr, and observed an increase in penguin populations during the Little Ice Age (LIA; 1500–1850 AD). We used cadmium content in ancient penguin guano as a proxy of ocean upwelling and identified a close linkage between penguin dynamics and atmospheric circulation and oceanic conditions. During the cold period of ∼1600–1825 AD, a deepened Amundsen Sea Low (ASL) led to stronger winds, intensified ocean upwelling, enlarged Ross Sea and McMurdo Sound polynyas, and thus higher food abundance and penguin populations. We propose a mechanism linking Antarctic marine ecology and atmospheric/oceanic dynamics which can help explain and predict responses of Antarctic high latitudes ecosystems to climate change. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110154
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institute of Polar Environment, Anhui Key Laboratory of Polar Environment and Global Change, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; Department of Biology and Marine Biology, University of North Carolina, 601 South College Road, Wilmington, NC 28403, United States; School of Resources and Environmental Engineering, Anhui University, Hefei, Anhui 230601, China
Recommended Citation:
Yang L.,Sun L.,Emslie S.D.,et al. Oceanographic mechanisms and penguin population increases during the Little Ice Age in the southern Ross Sea, Antarctica[J]. Earth and Planetary Science Letters,2018-01-01,481